Press ctrl+alt+0 to explodes My character
The problem is that you have inadvertently set part of your mesh to act as the active camera. This can be easily done by selecting an object and pressing Ctrl+Numpad0 - and it means that when you are trying to move the “active camera” it is pulling your mesh and rig apart, causing the distortion.

To resolve this simply select your actual camera and press Ctrl+Numpad0 to set that as the current active camera. Ctrl+Alt+Numpad0 should now be back to moving your actual camera rather than the mesh.